saturday is the day that all the major cities in the northeast from washington to boston will be affected. most likely a couple of inches of snow. because i don't think the storm will really explode until it is well off the coast. but if it intensifies more quickly, those amounts could be higher. we have to watch that very carefully. >> we know you'll be watching it. harvey leonard in boston tonight. thank you. >>> we're going to turn to the other part of the country cleaning up after that massive system. nearly three dozen reported twisters and now the aftermath. and a new portrait tonight of what it was like when those tornadoes barreled through. here's abc's matt gutman now. >> reporter: this surveillance video from a walgreens here in mobile showing the very gut of a tornado. the wind first blasts around debris. the lightning flashes, blinding. then the darkening funnel, dense with debris, begins sucking in cars, lifting them up, slamming them down. inside, this man in uniform, poking his head outside. a man wheeling his cart towards the door, then the sprint to safety. miraculously,